Question

我在php中有一个代码函数

它的作用：

它从表中吸收数据并将图像（保存为blob）转换为文件并放在名为＆＃34; image＆＃34;的子文件夹下。在基于版本和日期动态创建的文件夹下

ex：v3-20-12-2012

然后它创建一个csv文件并将其保存在v3-20-12-2012文件夹中。

然后它为文件夹v3-20-12-2012创建一个zip文件。

问题是，zip文件保存在项目文件夹中。我希望它可以下载。

我怎样才能实现这一点。

这是我的代码：

function create_csv($version,$ctg,$cnt,$nt,$api)
{

    $folder = $version."-".date('d-m-Y')."-".time();

    if(!file_exists('./'.$folder))
    {
        mkdir('./'.$folder);
        mkdir('./'.$folder.'/image/');
    }   

    $cnt_table = "aw_countries_".$version;
    $ctg_table = "aw_categories_".$version;
    $off_table = "aw_offers_".$version;


    $sizeof_ctg = count($ctg);
    $cond_ctg = " ( ";
    for($c = 0; $c < $sizeof_ctg ; $c++)
    {
        $cond_ctg = $cond_ctg." $ctg_table.category = '".$ctg[$c]."' ";
        if($c < intval($sizeof_ctg-1))
            $cond_ctg = $cond_ctg." OR ";
        else if($c == intval($sizeof_ctg-1))
            $cond_ctg = $cond_ctg." ) ";
    }

    $sizeof_cnt = count($cnt);
    $cond_cnt = " ( ";
    for($cn = 0; $cn < $sizeof_cnt ; $cn++)
    {
        $cond_cnt = $cond_cnt." $cnt_table.country = '".$cnt[$cn]."' ";
        if($cn < intval($sizeof_cnt-1))
            $cond_cnt = $cond_cnt." OR ";
        else if($cn == intval($sizeof_cnt-1))
            $cond_cnt = $cond_cnt." ) ";
    }

    $sizeof_nt = count($nt);
    $cond_nt = " ( ";
    for($n = 0; $n < $sizeof_nt ; $n++)
    {
        $cond_nt = $cond_nt." $off_table.network_id = '".$nt[$n]."' ";
        if($n < intval($sizeof_nt-1))
            $cond_nt = $cond_nt." OR ";
        else if($n == intval($sizeof_nt-1))
            $cond_nt = $cond_nt." ) ";
    }

    $sizeof_api = count($api);
    $cond_api = " ( ";
    for($a = 0; $a < $sizeof_api ; $a++)
    {
        $cond_api = $cond_api." $off_table.api_key = '".$api[$a]."' ";
        if($a < intval($sizeof_api-1))
            $cond_api = $cond_api." OR ";
        else if($a == intval($sizeof_api-1))
            $cond_api = $cond_api." ) ";
    }

    $output         = "";

    $sql = "SELECT DISTINCT $off_table.id,$off_table.name
            FROM $off_table,$cnt_table,$ctg_table
            WHERE  $off_table.id = $cnt_table.id
            AND $off_table.id = $ctg_table.id
            AND ".$cond_api."
            AND ".$cond_nt."
            AND ".$cond_cnt."
            AND ".$cond_ctg;

    $result = mysql_query($sql);

    $columns_total  = mysql_num_fields($result);

    for ($i = 0; $i < $columns_total; $i++) 
    {
        $heading    =   mysql_field_name($result, $i);
        $output     .= '"'.$heading.'",';
    }
    $output .= '"icon"';
    $output .="\n";

    while ($row = mysql_fetch_array($result)) 
    {
        for ($i = 0; $i < $columns_total; $i++) 
        {
            $output .='"'.$row["$i"].'",';
        }
        $sql_icon = "SELECT $off_table.icon FROM $off_table WHERE id = '".$row['id']."'";
        $result_icon = mysql_query($sql_icon);
        while($row_icon = mysql_fetch_array($result_icon)) 
        {
            $image = $row_icon["icon"];
            $id = $row["id"];
            $icon = "./$folder/image/{$id}.jpg";
            $icon_link = "$folder/image/{$id}.jpg";
            file_put_contents($icon, $image);
        }
        $output .= '"'.$icon_link.'"';
        $output .="\n";
    }
    $filename =  "myFile.csv";
    $fd = fopen ( "./$folder/$filename", "w");
    fputs($fd, $output);
    fclose($fd);

    $source = $folder;
    $destination = $folder.'.zip';

    $flag = '';

    if (!extension_loaded('zip') || !file_exists($source)) {
        return false;
    }

    $zip = new ZipArchive();
    if (!$zip->open($destination, ZIPARCHIVE::CREATE)) {
        return false;
    }

    $source = str_replace('\\', '/', realpath($source));
    if($flag)
    {
        $flag = basename($source) . '/';
    }

    if (is_dir($source) === true)
    {
        $files = new RecursiveIteratorIterator(new RecursiveDirectoryIterator($source), RecursiveIteratorIterator::SELF_FIRST);
        foreach ($files as $file)
        {
            $file = str_replace('\\', '/', realpath($file));

            if (is_dir($file) === true)
            {
            }
            else if (is_file($file) === true)
            {
                $zip->addFromString(str_replace($source . '/', '', $flag.$file), file_get_contents($file));
            }
        }
    }
    else if (is_file($source) === true)
    {
        $zip->addFromString($flag.basename($source), file_get_contents($source));
    }

    $zip->close();

    if (is_dir($folder)) 
    { 
        $objects = scandir($folder); 
        foreach ($objects as $object) 
        { 
           if ($object != "." && $object != "..") 
           { 
                if (filetype($folder."/".$object) == "dir") 
                {
                    $object_inner = scandir($folder."/".$object);
                    foreach ($object_inner as $object_inner) 
                    { 
                       if ($object_inner != "." && $object_inner != "..") 
                       { 
                            unlink($folder."/".$object."/".$object_inner); 
                       } 
                    } 
                    rmdir($folder."/".$object); 
                }   
                else 
                    unlink($folder."/".$object); 
           } 
        } 
        reset($objects); 
    } 
    rmdir("./".$folder);

    /*$zipfile = $folder.'.zip';

    $file_name = basename($zipfile);

    header("Content-Type: application/octet-stream");
    header("Content-Disposition: attachment; filename=$file_name");
    header("Content-Length: " . filesize($zipfile));

    readfile($zipfile);
    exit;*/


}




EDIT:

我有两个文件实例。一个文件gettng自动保存在项目文件夹中。下一个是被迫下载。自动保存的那个没有解压缩的问题。但强行下载的那个，在解压时有问题。

Zip Error Message

Error Message

Answer 1

您忘记在最后发送实际数据，并且发送Content-Length标头也不错。

示例：

$filename = 'something.zip';
$filepath = './path/to/files/directory/';


header('Content-type: application/zip');
header('Content-Disposition: attachment; filename='.$filename);
header("Content-Length: ".filesize($filepath.$filename));
ob_end_flush();
readfile($filepath.$filename);

作为旁注，您可能希望拆分该功能，因为它的功能超出了应有的范围。如名称所示，它应该只是create_csv，但也在使用DB，创建zip，发送响应等。

更新

更新后，我仔细查看了您的代码，并且您遇到了一些可能导致下载损坏的问题：

$source = str_replace('\\', '\\', realpath($source));
// more code ...
$file = realpath($file);

这些行将导致在归档中使用完整路径，这可能是您不想要的。我建议对这两行进行注释，以便在存档中存储相对路径。

将所有文件添加到存档后，不要关闭它，因为存档的临时名称与最后一个不同，发送标题时使用的代码将导致发送垃圾数据。

要解决此问题，您应该在发送标题之前关闭.zip：

// more code ... 

$zip->close();

header('Content-type: application/zip');

下载文件已损坏

1 个答案:

更新